Amana
Furnace

Model # OC100RA Official Amana oil-fired counterflow furnace

Here are the diagrams and repair parts for Official Amana OC100RA oil-fired counterflow furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 153 parts  |

Spring Catch 22-1815
#34

Replacement parts diagram

Spring catch

Part #22-1815

The manufacturer no longer makes this part, and there's no substitute part

"oe" Mounting Plate Gasket 22-2387
#21

Replacement parts diagram

"oe" mounting plate gasket

Part #22-2387

The manufacturer no longer makes this part, and there's no substitute part

Truarc Ring 20-5049

#NI

All parts diagram

Truarc ring

Part #20-5049

The manufacturer no longer makes this part, and there's no substitute part

Door - Access - Center 306-5460
#9C

Replacement parts diagram

Door - access - center

Part #306-5460

The manufacturer no longer makes this part, and there's no substitute part

Furnace Blower Wheel 20-5034
#41

Replacement parts diagram

Furnace blower wheel

Part #20-5034

The manufacturer no longer makes this part, and there's no substitute part

Motor Pulley 20-1509
Motor pulley

Part #20-1509

The manufacturer no longer makes this part, and there's no substitute part

Panel - Lower Vestibule 305-5050
#5B

Replacement parts diagram

Panel - lower vestibule

Part #305-5050

The manufacturer no longer makes this part, and there's no substitute part

Cleanout Cap Asm. 900-9005
#24

Replacement parts diagram

Cleanout cap asm.

Part #900-9005

The manufacturer no longer makes this part, and there's no substitute part

Control - Transformer M-h At87a1015 21-0100

#NI

All parts diagram

Control - transformer m-h at87a1015

Part #21-0100

The manufacturer no longer makes this part, and there's no substitute part

Blower Pulley 5 X 3/4 20-1532
#50C

Replacement parts diagram

Blower pulley 5 x 3/4

Part #20-1532

The manufacturer no longer makes this part, and there's no substitute part

Effective articles & videos to help repair your furnaces

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…